Home / 10,211.48-15,302.87-8,122.22

Finding the Fourth Proportional to 10,211.48, 15,302.87 and 8,122.22

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Solution

The fourth proportional to 10,211.48, 15,302.87 and 8,122.22 is: 12,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.48 : 15,302.87 = 8,122.22 : x
  2. Step 2: Convert to fraction form
    10,211.48/15,302.87 = 8,122.22/x
  3. Step 3: Cross multiply
    10,211.48x = 15,302.87 × 8,122.22
  4. Step 4: Simplify right side
    10,211.48x = 124,293,159.65
  5. Step 5: Solve for x
    x = 124,293,159.65/10,211.48
  6. Step 6: Final answer
    x = 12,171.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.